Docs: update manual

Author: pierreguillot

Docs/Images/section-export-analyses.1-v2.1.0.png

@@ -341,7 +341,7 @@ The results table displays data in three columns, the first corresponding to tim
 The results of the analyses of a document can be exported in different formats, as an image, text or binary file. You can display the export window via the main menu `File → Export...` or with the keyboard shortcut `⌘ Cmd + ⇧ Shift + E` (Mac) or `Ctrl + ⇧ Shift + E` (Linux/Windows). This window allows you to select the analysis(es) to be exported, define the time range, the format and the options for this format. 
 
 <p align="center">
-<img src="Images/section-export-analyses.1-v2.1.0.png" width="232"/>
+<img src="Images/section-export-analyses.1-v2.1.1.png" width="232"/>
 </p>
 
 Once you have selected the desired configuration, click on the `Export` button (**E5**), you will be prompted to select an output file or a folder if you are exporting several analyses in separate files (the name of the files will be generated automatically with the name of the group and the track).
@@ -386,6 +386,8 @@ The `Image Size` dropdown menu offers presets to control the size of the image.
 
 The `Image Width`, `Image Height`, `Image PPI` number fields can be used to manually define the width and the height of the images in pixels and the resolution in pixels per inch.
 
+The `Outside Grid` dropdown menu allows you to select the image borders that should contain the graduations and labels of the grids located outside the main frame for the horizontal (time) and vertical ranges.  
+
 ### 7.3. Text and binary options
 
 The `Ignore Matrix Tracks` button offers an option to ignore matrix analyses (such as sonograms) that are usually only visually relevant and contain a lot of information generating large files.